Sheet-packing.



No. 871,178. PATENTED NOV. 19, 1907.

n J. OSTRANDER.

SHEET PACKING.

APPLIUATION FILED JUNE 21. 1906.

/0 J1/wanton wane/0% 72: mes 0 s t raiz der j To all whom 'it may concern: I

'the less compressible projections.

UNITED STATES PATENT onirica.

JAMES OS'TRANDER, .()FiINDIANAPOLI INDIANA..

. SHEET-PACKING.

Be it known that I, JAMES OsTnANDER, a citizen of 'the Unitedy States, residing at Indiana olis, inthe county of Marion rand State l of In iana, have 'invented certain new and useful Im rovements in Slieet-Iacking, of which the ollowing is a specification.

The ob'ect of my invention 1s to produce a flexible s eet packing one or both faces of whichI are provided projecting portions having a greater` resistance to compression than `the `main body of the sheet', whereby,

4when the packing islplaced between two surfaces and subjected to compression the first `compession will occur 1n the main body of eet under or. between the inner ends of These the s i pro'ections may be isolated if desired, but I re er `to so connect themv that noline can be rawn from `one edge of the surface of the sheet to fan opposite edge without intersecting one or more of the projections and therefore the projections should preferably 'be in the form of closed touching figures'.

The projections need not necessarily be integral with the intermediate bod of the sheet, but I prefer a packing ma e in this way and theaccompanying drawings illustrate my invention' as embodied in 'a rubber sheet packing.

Fi re 1 is a plan of my packing with a desirab e and conveniently formed arrangement of. projections; Fig. 2 a ma iied sectional view, and Fig. 3 a sectiona view of a form having projections on' only one face.

In the drawings 1() indicates the main or intermediate portion of the sheet and 11 indicate the projections plreferably oppositely arranged. When the s eet is made of rubber the projections 1-1 should be vulcanized .or otherwise hardened so as to have a greater .l resistance against compression.

Ifl bothfaces of the packing are provided with the projections they should be arranged exactly opposite each other, and in height should be less than half the thickness of the intermediate portion ofthe sheet.

. In operation the packiner will be prepared for rece tion in the desire place bycutting t0 the esired size in theusual manner.- It will then be laced between the two surfaces to be packed) and said surfaces brought together with the desired degree of compression. The first result of compression will be to drive the less compressible ribs or projections into the intermediate sheet thus pinchi Specification of Letters Patent.

Application Bled June 21!1906,' Serial No. 322.888. 4

Patented Nov. 19, 1907.

ing the, intermediate sheet between them while the intermediate sheet will be bul ed upl toward the approa'chingsurfaces so t at W en the two surfaces have been brought together so as to lcontact with the surfaces of the packing there will be'lines of .contact where'the compression is quite considerable while at others ythe 'contact of the packing with the surfaces will be at a considerable less" pressure. A As a consequence a tight joint Will be-made and the intermediate portion of the sheet is pinched between the less compressible portions and thus prevented from being blown out.

I claim as my invention:

1. A sheet acking comprising an intermediate portion aving on each face oppositely arran ed projections which are less compressi le t an the intermediate portion.

2. A sheet packing comprising a main portion having on one face rojections which are less compressible than t e main portion.

3. In a sheet packing the` combination with an intermedlate compressible portion, of portions of less compressible material arranged o posite each other on the opposite faces of t e intermediate portion.

4. Ina sheet packing the combination with a main ,compressible portion, of portions of less com ressible material arranged on one face of the main portion.

5. A sheet packing comprising an interjections on the opposite sides of the intermediate portion being' arranged opposite each other.

6. A sheet packing comprising a main compressible portion and a facing of projectino' lportions forming adjacent closed iigures 6I ess compressible material.

7. A sheet packing comprising an intermediate compressible sheet and projections formed integral therewith and on the opposite faces thereof of material less compressible than the intermediate portion.

8. A sheet compressible s eetfand projections formed integral therewith and on one face thereof` of material less compressible than the main portion.

9. A packing composed of a sheet of rubber having o posed (projections on its opposite faces Vu canize so as to be less comlpacking comprising a mainf"10., A ae cqm osed of a sheet of rubl ormin touching closed guresfand being ber haviiig Ililrhijgectiogs on one face vuloanvuleamgzed to be less compressible than-the ized so as to be less eompressible then the intermediate portion. v 15 intermediate portion. In Witness whereof, I, `have hereunto set 5 11. A packing composed of a sheet of rubber having on each face rojeeting ortions this 16th dayof June, A. D. one thousen formilg touching elised gures, Isli rojeenine hundred and six. Y v --f tions ei arra e o osite eac ot er on the two gies anldgbeingguleanized to be less l JAMES OSTRANDER' [Lf S'] 10 compressible than the intermediate portion.

` 12. A packing composed of a sheet of rubber havingon one fae projecting portions l Witnesses:-

ARTHUR M. Hoon, THOMAS W. MCMEANS.

my hand and seal at Indianapolis, Indiana- 

